user
Create a list of ten shared characteristics between birds and reptiles.
assistant

1. Both birds and reptiles are cold-blooded.
2. Both are vertebrates.
3. Both lay hard-shelled eggs.
4. Both have scaly skin. 
5. Both birds and reptiles are equipped with teeth, claws, or beaks for foraging for food. 
6. Both have lung-based respiration systems.
7. Both birds and reptiles are capable of vision and hearing.
8. Both excrete nitrogenous wastes (birds as uric acid and reptiles as uric acid and ammonia).
9. The young of both may remain dependent on their parents for some time after hatching.
10. Both use body heat to incubate eggs to regulate the development of embryos.